[1�C3] This study reflects the ultrastructure of ameloblastoma as well as the electron microscopic sellckchem differences between follicular and plexiform variants, which could be related Inhibitors,Modulators,Libraries to histological differences.[4] Electron microscopy can demonstrate decisive structural peculiarities to classify different variants of ameloblastoma, and in treatment planning.[5,6] There is only one report of ultramicroscopy regarding ameloblastoma in the last Inhibitors,Modulators,Libraries decade, along with a few other reports in English literature. Aim of the study The present study aims to assess the ultramicroscopic features of the epithelial and connective tissue components of ameloblastoma. MATERIALS AND METHODS This study is an ultrastructural examination of six cases of ameloblastoma, out of which three were of follicular type and the other three were of plexiform type.

The biopsy specimens of previously diagnosed ameloblastomas received in the Department of Oral and Maxillofacial Pathology, Government Dental College and Hospital, Nagpur, were utilized for this study. They were cut longitudinally into two unequal halves without Inhibitors,Modulators,Libraries causing Inhibitors,Modulators,Libraries any distortion of the tissues. The larger part was processed for routine histopathology and the smaller part was sent for transmission electron microscopy to TEM section, Department of Anatomy, AIIMS, New Delhi. The ultramicroscopic features were assessed for the epithelial component, the connective tissue component, and the epithelial�Cconnective tissue interface. RESULTS Ultramicroscopic assessment revealed that the follicular ameloblastoma Inhibitors,Modulators,Libraries contained two groups of cells, the peripheral cells and central cells, whereas the plexiform variant revealed a single cell group.

The peripheral cells were generally tall columnar cells with similarly elongated nuclei. The nuclei revealed an irregular outline and contained prominent nucleoli. Cytoplasmic organelles were scattered throughout the cytoplasm and did not show any sign of segregation. Mitochondria were somewhat swollen and were found on both sides of the nucleus. Bundles of tonofilaments and clusters of Dacomitinib ribosome were scattered throughout the cell. Rough endoplasmic reticulum (RER) was present without any orientation. Numerous dense-cored secretory granules, condensing secretory granules, and several coated vesicles associated with Golgi complex could be seen, indicating that the cells were in pre-ameloblast stage or early secretory ameloblast stage [Figures [Figures11�C3].